A Woods BH6000 is suitable for your tractor. I have one on my
BX2200. It is 2% more powerful than the bh on a
BX25 (there is no BX2500), which is negligible, but is slightly more difficult to get on and off. It is a 4 point hitch sub-frame bh. Though there are 3ph backhoes, you DO NOT want one; it will destroy your tractor. With the Woods bh, you will receive a new split 3ph which is removed when attaching the bh. You will also receive a base that allows the seat to swivel and lift higher. The ROPS has not been an issue for me; in fact, the only people I have ever heard cite it as an issue are people who do not have a 4 digit BX with the BH6000.
A couple of years ago, a thread ran entitled "What is your least used implement that you wish you had not bought?" The most oft stated answer was the PHD. I have a PHD for my BX. I have Duripan, which is much harder than regular hardpan. To dig in it, one must have a Pengo auger with carbide tip and either a down pressure kit or ballast for the top of the PHD frame.
Adding a Woods BH6000 is cheaper than trading for a
BX25, however for those who do not already have a BX, it is less expensive to buy a
BX25 than to get a 4 digit BX plus the BH6000. If you simply want rear ballast and a useful 3ph attachment, the BH is an awfully expensive way to get it. It would be more advisable to buy a carry all and fashion some sort of ballast box or custom (removable) sub-frame on which to stack barbell weights. The carry all can be had for $100 to $200 and is extremely versatile.
There are scores of threads on all the things I have mentioned in the archives. The search function will lead you to any of them. If there is anything in particular about which you desire more info. and you cannot locate it, let us know and we can look up some links to old threads for you to peruse.